CN202322730U

CN202322730U - Self-heating straw carbonization furnace

Info

Publication number: CN202322730U
Application number: CN2011204691195U
Authority: CN
Inventors: 杜克镛
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-11-23
Filing date: 2011-11-23
Publication date: 2012-07-11
Anticipated expiration: 2021-11-23

Abstract

The utility model relates to carbonization equipment, in particular relates to a self-circulating heating straw carbonization furnace which solves the problems of the conventional carbonization equipment that combustible components in crops are not discharged for utilization, and a lot of fuel needs to be consumed for supplying carbonization heat. The equipment comprises a carbonization chamber provided with a feeding hole and a discharging hole, and is characterized in that an internal combustion chamber is arranged inside the carbonization chamber, the outer side of the carbonization chamber is surrounded by an external combustion chamber, smoke vents are respectively arranged between the carbonization chamber and the internal combustion chamber, as well as between the carbonization chamber and the external combustion chamber, both the internal combustion chamber and the external combustion chamber are provided with air inlets and air outlets, and the internal combustion chamber or the external combustion chamber is also connected with a start-up heater for providing start-up heat. The equipment can be used for guiding out combustible exhaust gas decomposed in carbonization process for combustion, thus reducing fuel consumption; hot air exhaust gas of the carbonization furnace serving as material conveying air flow can preheat materials so as to reduce the energy loss; and simultaneous internal and external circulating heating is realized by arranging the internal combustion chamber and the external combustion chamber, so that the utilization rate of circulating energy is high.

Description

A kind of from the heating straw charring furnace

Technical field

The utility model relates to a kind of charing equipment, particularly a kind of stalk coke oven of self-circulation heating.

Background technology

Agricultural crop straw is a kind of good biomass energy, and annual very big output is arranged all, in the past since to agricultural crop straw utilize mode few, normally pile up in the fields and directly burn, not only waste, and contaminate environment.Along with the research and development of biomass energy, agricultural crop straw can pass through high temperature carbonization as good biomass energy, thereby realizes multiple use.Present straw charring equipment generally is to let stalk be in carry out charing under the hot environment, needs a large amount of fuel that heat is provided, and it is bigger to consume energy; Adopt the cooking stove formula of sealing, a charging need be sealed coking chamber later on and carried out charing, and charing is carried out discharging after accomplishing again; Can't continuous firing, and in discharging with once more in the fill process, calorific loss is bigger; Less economical; And be in the environment of a relative closure owing to stalk in the carbonization process, stalk decomposes the flammable flue gas that produces and can't utilize, and causes significant wastage.

The CN201495199U patent of Patent Office of the People's Republic of China's bulletin on June 2nd, 2010; Name is called the charred rice husk suite of equipment, this device by: magnetic buncher, burner loading hopper, burner, body of heater, charing bucket auger, charring furnace loading hopper, material loading auger, discharging auger, burner, outside framework, crater pipe connecting, bellows, feeding packing auger, burner slagging-off auger, burner high pressure positive blower, motor, feeding packing auger reduction box constitute.The magnetic buncher is connected with the feeding packing auger reduction box, is equipped with the burner loading hopper on the feeding packing auger, and burner slagging-off auger is connected with burner, and burner is connected with body of heater, and charing bucket auger is installed in the body of heater, and the discharging auger is connected with charing bucket auger.Rice husk is successively through material loading auger, charing auger, discharging auger in this device; Charing in the pyritous stove has realized the persistence of production process, but the moisture of separating out in the rice husk in the carbonization process is not discharged; The flammable flue gas of low chain is not derived yet utilizes, causes waste and environmental pollution; These components can be blocked auger as not discharging, and charging can not unobstructedly be carried out, and can influence quality product simultaneously; And this device need constantly interpolation fuel be to provide heat maintenance stove intravital temperature in burner, and consumption greatly.

Summary of the invention

The purpose of the utility model is to solve in the existing charing equipment farm crop combustibleconstituents not have to discharge and utilizes and need a large amount of fuel of consumption that the problem of charing heat is provided; A kind of stalk coke oven of self-circulation heating is provided, and this charring furnace also is applicable to the charing of various biomass materials simultaneously.

The utility model solves the technical scheme that its technical problem adopted: a kind of from the heating straw charring furnace; Comprise coking chamber; Coking chamber has opening for feed and discharge port; Said coking chamber inside is provided with the inner combustion chamber, and the coking chamber outer ring is wound with exterior combustion chamber, between coking chamber and the inner combustion chamber, be respectively equipped with exhaust smoke hole between coking chamber and the exterior combustion chamber; Inner combustion chamber and exterior combustion chamber all have blast inlet and air outlet, and said inner combustion chamber or exterior combustion chamber also are connected with provides the startup well heater that starts heat.The charing under hot environment of biomass materials such as stalk decomposites flammable flue gas and is discharged in inner combustion chamber and the exterior combustion chamber through exhaust smoke hole in the carbonization process, feed combustion air through blast inlet toward inner combustion chamber and exterior combustion chamber; Because flammable flue gas itself has the temperature that is higher than burning-point, can heat by automatic combustion, for charing provides heat; Coking chamber material decomposition course remains the pressure that is higher than the combustion chamber; Combustion air can not get into coking chamber from exhaust smoke hole, and utilizes inner combustion chamber and exterior combustion chamber to realize the ectonexine heating, with the coking chamber double team in the centre; Heats is good, and HU is higher.Therefore, utilize the startup burner that the startup heat is provided, when the coking chamber temperature reaches the charing standard; After but material is decomposed to form burning fume; Just can stop to start the heat supply of burner, utilize the internal recycle of coking chamber and interior exterior combustion chamber to reach the purpose of material charing, reduce the consumption of fuel.If shortage of heat is provided owing to reasons such as heat scatters and disappears cause circulation, also can utilize to start the burner additional heat, this moment, fuel consumption was also much smaller than utilizing roasting kiln that heat is provided separately.

As preferably, said exterior combustion chamber with start well heater and be connected, said startup well heater has blast inlet, the blast inlet while that starts well heater, the air outlet of exterior combustion chamber was positioned at the exterior combustion chamber top as the exterior combustion chamber blast inlet.After the startup burner stops heat being provided, no longer add fuel, and keep the supply of startup burner combustion air toward starting burner, combustion air gets into exterior combustion chamber from starting burner, and discharge from top outlet inlet combustion-supporting back.

As preferably, said inner combustion chamber is provided with the blast pipe that passes coking chamber and exterior combustion chamber and external communications, is provided with pipe between inner combustion chamber and the exterior combustion chamber, the air outlet of the shared exterior combustion chamber in inner combustion chamber.The combustion air of inner combustion chamber gets into from blast pipe, and combustion-supporting back utilizes the air outlet of exterior combustion chamber to discharge through getting into exterior combustion chamber pipe.

As preferably, the smoke outlet between said coking chamber and the inner combustion chamber is positioned at the top of coking chamber, and smoke outlet is positioned at the bottom of coking chamber between said coking chamber and the exterior combustion chamber.As other scheme, also can the position of smoke outlet be exchanged up and down, perhaps two groups of smoke outlets alternately are provided with up and down, guarantee that inner combustion chamber and exterior combustion chamber all have flammable flue gas to supply burning.

As preferably, said coking chamber opening for feed also is connected with breaking drier, and the air outlet of said inner combustion chamber and exterior combustion chamber links to each other with breaking drier.The tail gas that air outlet is discharged also has higher heat, can lead to breaking drier material is carried out drying and preheats.

As preferably, also be connected with cyclonic separator between said coking chamber opening for feed and the breaking drier.Hot blast behind the dry materials can be used as delivery air simultaneously, before opening for feed, pass through the cyclonic separator separation of material.As preferably, induced draft fan can be set at the cyclonic separator place strengthen gas delivery power.

As preferably, said coking chamber top adopts feeding packing auger as opening for feed.Feeding packing auger realizes continuing charging.The front end of feeding packing auger is provided with loading hopper and aligns with the feed opening of cyclonic separator.

As preferably, said inner combustion chamber is the vertex of a cone, and the end of feeding packing auger is positioned at the top of inner combustion chamber's vertex of a cone.After biomass materials such as stalk fall into coking chamber from feeding packing auger, can not be deposited in the top, inner combustion chamber, and the separation through the vertex of a cone, can realize material in coking chamber around inner combustion chamber's uniform distribution more.

As preferably, said coking chamber top adopts the discharging auger as discharge port.Can realize continuing discharging.

As preferably, the outside of said exterior combustion chamber also is provided with thermofin.

But the burning fume that the utility model will decomposite when biomass material charings such as stalk derivation is burnt, is produced heat coking chamber is added the thermosetting circulation, has improved capacity usage ratio, reduces fuel consumption; The hot blast tail gas of charring furnace carries out preheating as the mass transport air-flow to material, and energy efficient has reduced power loss; Circulation was simultaneously heated inside and outside inner combustion chamber and exterior combustion chamber were set, and the circulating energy utilization ratio is high.

Description of drawings

Fig. 1 is a kind of structural representation of the utility model.

Fig. 2 is an A place structure enlarged view among the utility model Fig. 1.

Fig. 3 is a B place structure enlarged view among the utility model Fig. 1.

Among the figure: 1. breaking drier, 2. cyclonic separator, 3. induced draft fan, 4. loading hopper, 5. feeding packing auger, 6. thermofin; 7. startup burner, 8. discharging auger, 9. air outlet, 10. exterior combustion chamber, 11. coking chambers; 12. pipe, 13. inner combustion chambers, 14. blast pipes, 15. anchors, 16. smoke outlets.

Embodiment

Below through specific embodiment and combine accompanying drawing that the utility model is further specified.

Embodiment: a kind of from the heating straw charring furnace, like Fig. 1, Fig. 2, shown in Figure 3.This device comprises a round shape coking chamber 11; Coking chamber 11 bosoms are provided with inner combustion chamber 13, and coking chamber 11 outer rings are wound with exterior combustion chamber 10, and exterior combustion chamber 10 outsides are provided with thermofin 6; Coking chamber is folded between inner combustion chamber and the exterior combustion chamber, and fixing through anchor 15.Coking chamber 11 tops are provided with feeding packing auger 5, and the front end of feeding packing auger 5 is provided with hopper 4, and the bottom of coking chamber 11 is provided with discharging auger 8.As shown in Figure 3, hoop offers two row's smoke outlets 16 on the adjacent sidewall of the bottom of coking chamber 11 and exterior combustion chamber 10; As shown in Figure 2, hoop offers two row's smoke outlets 16 on the adjacent sidewall in the top of coking chamber 11 and inner combustion chamber 13.

The bottom of inner combustion chamber 13 is provided with the blast pipe 14 that passes coking chamber 11, exterior combustion chamber 10 and external communications; 13 tops, inner combustion chamber are the vertex of a cone; The end of feeding packing auger 5 be positioned at the vertex of a cone directly over, be provided with many pipe 12 of passing coking chamber 11 between inner combustion chamber 13 and the exterior combustion chamber 10.

Bottom one side of exterior combustion chamber 10 is provided with and starts burner 7; Start the initial heat that burner 7 provides charring furnace to start; Start the blast inlet of the blast inlet outer burning 10 of conduct simultaneously of burner 7; Exterior combustion chamber 10 tops are higher than the top of coking chamber 11, and the crown center of exterior combustion chamber 10 is provided with air outlet 9.

Exterior combustion chamber air outlet 9 links to each other with breaking drier 1; Breaking drier 1 links to each other with cyclonic separator 2 through feeding tube; The exhaust outlet of cyclonic separator 2 is provided with the induced draft fan 3 that power is provided, and the feed opening of cyclonic separator 2 aligns with the loading hopper 4 of feeding packing auger 5 front ends.

The straw charring process of this device is following; Stalk is pulverized dry through breaking drier, and has induced draft fan to provide power to pass through feeding tube entering cyclonic separator, after separating, falls into loading hopper; Get into coking chamber through feeding packing auger again; Light the startup burner, be blown into after the combustion air of burner is combustion-supporting and form hot blast in the exterior combustion chamber, coking chamber is added the thermosetting hot environment; Simultaneously the hot blast that blows out of exterior combustion chamber air outlet feeds breaking drier and carries out drying and preheat, and as the feeding gas delivery stalk of feeding tube.Stalk is at coking chamber and carries out charing under high temperature, the oxygen-free environment; But the burning fume that decomposites in the carbonization process gets into inner combustion chamber and exterior combustion chamber through exhaust smoke hole; Toward inner combustion chamber feed combustion air through blast pipe this moment; Stop to start the fuel interpolation of burner; And keep startup burner air intake to make combustion air directly get into exterior combustion chamber from starting burner, because flammable flue-gas temperature is higher than burning-point, for charing heat is provided in the combustion-supporting direct down burning of combustion air; But form the circulation of flammable smoke combustion heating-decomposition burning fume-flammable smoke combustion reheat, the combustion tail gas of internal combustion is discharged incoming stock drying and preheating circulation from air outlet jointly through getting into exterior combustion chamber and exterior combustion chamber tail gas pipe.In carbonization process, the flammable smoke combustion of generation provides heat to form circulation, and capacity usage ratio is high, forms Fuel cycle, fuel economy; Combustion tail gas is directly discharging not, but as the feeding air-flow stalk is carried out preheating and drying, forms hot air circulation.Have very high capacity usage ratio in this device carbonization process, energy consumption is low.

This device not only is suitable for straw charring, also is fit to the charing of multiple other biological pledge material.

Claims

1. one kind from the heating straw charring furnace; Comprise coking chamber, coking chamber has opening for feed and discharge port, it is characterized in that: said coking chamber inside is provided with the inner combustion chamber; The coking chamber outer ring is wound with exterior combustion chamber; Between coking chamber and the inner combustion chamber, be respectively equipped with exhaust smoke hole between coking chamber and the exterior combustion chamber, inner combustion chamber and exterior combustion chamber all have blast inlet and air outlet, and said inner combustion chamber or exterior combustion chamber also are connected with provides the startup well heater that starts heat.

2. according to claim 1 a kind of from the heating straw charring furnace; It is characterized in that: said exterior combustion chamber is connected with the startup well heater; Said startup well heater has blast inlet; The blast inlet that starts well heater is simultaneously as the exterior combustion chamber blast inlet, and the air outlet of exterior combustion chamber is positioned at the exterior combustion chamber top.

3. according to claim 1 a kind of from the heating straw charring furnace; It is characterized in that: said inner combustion chamber is provided with the blast pipe that passes coking chamber and exterior combustion chamber and external communications; Be provided with pipe between inner combustion chamber and the exterior combustion chamber, the air outlet of the shared exterior combustion chamber in inner combustion chamber.

4. according to claim 1 or 2 or 3 described a kind of from the heating straw charring furnace, it is characterized in that: the smoke outlet between said coking chamber and the inner combustion chamber is positioned at the top of coking chamber, and smoke outlet is positioned at the bottom of coking chamber between said coking chamber and the exterior combustion chamber.

5. according to claim 1 or 2 or 3 described a kind of from the heating straw charring furnace, it is characterized in that: said coking chamber opening for feed also is connected with breaking drier, and the air outlet of said inner combustion chamber and exterior combustion chamber links to each other with breaking drier.

6. according to claim 5 a kind of from the heating straw charring furnace, it is characterized in that: also be connected with cyclonic separator between said coking chamber opening for feed and the breaking drier.

7. according to claim 1 or 2 or 3 described a kind of from the heating straw charring furnace, it is characterized in that: said coking chamber top adopts feeding packing auger as opening for feed.

8. according to claim 7 a kind of from the heating straw charring furnace, it is characterized in that: said inner combustion chamber is the vertex of a cone, and the end of feeding packing auger is positioned at the top of inner combustion chamber's vertex of a cone.

9. according to claim 1 or 2 or 3 described a kind of from the heating straw charring furnace, it is characterized in that: said coking chamber top adopts the discharging auger as discharge port.

10. according to claim 1 or 2 or 3 described a kind of from the heating straw charring furnace, it is characterized in that: the outside of said exterior combustion chamber also is provided with thermofin.